With high dispersity and high activity, silica fume is a specific additive for cement and concrete, capable of distinctly improving the performance of concrete and upgrading the strength of concrete.
作为高分散度和高活性材料，硅粉是一种特效的水泥、混凝土掺合料，它能明显地改善混凝土的性能，提高混凝土的强度。
High performance concrete is a good example of the application of high performance cement-based materials. Superplasticizer has played the vital roles in the high performance of concrete.
高性能混凝土是高性能水泥基材料的应用典范，高效减水剂对混凝土的高性能化起着至关重要的作用。
Coastal structure demands rather high durability and antiseptic effect of concrete and steel. In order to improve concrete immanent performance, cement quality is properly chosen.
沿海建筑物对混凝土和钢结构防腐耐久性提出很高要求，笔者从水泥品质上进行了比选，以提高砼内在质量；
Sclerous concrete materials possess the characteristics of imperceptibility, microcosmic and more micro-pores, even excellent high-performance cement possess so.
硬化后混凝土材料具有细观、微观多孔隙特征，即使配制良好的高性能混凝土，也含有微孔隙和微裂纹。
The characteristic of high performance concrete (HPC) is low water cement ratio and active contents addition, by which the durability of concrete can be improved.
而高性能混凝土特点是低水胶比及添加活性矿物集料，从而达到改善耐久性能的目的。
The laws of influences from usage amount of cement, mineral admixtures and concrete age on shrinkage and creep of high performance concrete are studied through tests.
试验研究了水泥用量、矿物掺合料、龄期对高性能混凝土收缩、徐变的影响规律。
The result of the research indicates that the high performance concrete produced with this type of cement is of higher early and post strength and the electric flux of the concrete is low.
研究结果表明，应用该水泥配制的高性能混凝土均具有较高的早期强度和后期强度，混凝土的电通量较低。
High Performance Concrete (HPC) has significant self-shrinkage due to the consumption of water caused by the cement hydration.
高性能混凝土具有严重的自收缩现象。
This research was done on the tensile behavior of high performance cement-mortar to concrete through core-drilling and pull-stripping test.
研究了高性能水泥复合砂浆与混凝土之间的粘结性能。
This research was done on the tensile behavior of high performance cement-mortar to concrete through core-drilling and pull-stripping test.
研究了高性能水泥复合砂浆与混凝土之间的粘结性能。
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